# From Sand to AI This is a collection of resources and articles about the fractal hierarchy of [[What Are Digital Systems?|digital systems]]—from electrical signals to data centers—and other topics, including wireless communications and aerospace. The content grows from the fundamentals, such as physics and electromagnetics, all the way to semiconductors, software, algorithms, simulation, and machine learning, and explores the systemic foundations of [[Artificial Intelligence|artificial intelligence]]. This site combines original content along with curated content pulled from books and online resources. All credit is given to the best of my knowledge. Maintainer: [Ignacio Chechile](https://www.ignaciochechile.com) (ignacio at ignaciochechile dot com) > [!tip] > Use the navigation pane on your left to go through the notes (upper left for phones) > [!attention] > Dark mode may screw up some images with transparent backgrounds. You can briefly switch to light mode to see an image as needed ==(EDIT: Dark mode is disabled for now, sorry)==. > [!attention] > For a better browsing experience, use a laptop (phone does not let you navigate so easily, but if you go by phone, browse horizontally otherwise some figures and formulas might not show correctly) > [!warning] > These notes are a constant work in progress. Sections might be expanded (or shrunk) at any given time. Feedback is welcome. If you need a bit of a push to start, you may consider starting here: [[To Engineer is (Still) Human (Start Here)|To Engineer is (Still) Human]] Or if you wanna go technical right away, consider starting here: [[Hierarchy of Digital Systems (Start Here)|Hierarchy of Digital Systems]]